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Published on: August 7, 2017
Short- and long-term risk of infections as a function of group child care attendance: an 8-year population-based
Sylvana M Côté1, Amélie Petitclerc, Marie-France Raynault
1Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada. sylvana.cote@umontreal.ca
Insights
Children starting large group child care (GCC) before age 2½ experience more infections initially. However, this early exposure appears to reduce respiratory and ear infections later in elementary school.
Area of Science:
- Pediatric infectious diseases
- Child development and care
Background:
- Group child care (GCC) is common for young children.
- The impact of GCC timing and type on infection frequency is not fully understood.
Purpose of the Study:
- To investigate if infection rates in the first 8 years of life differ based on the age of GCC initiation and its type.
Main Methods:
- Prospective cohort study of 1238 families in Quebec from 1998-2006.
- Compared home care with small or large GCC.
- Tracked maternal reports of respiratory, ear, and gastrointestinal infections.
Main Results:
- Children in large GCC before 2½ had more respiratory and ear infections during the early preschool period.
- These children showed fewer respiratory and ear infections in elementary school compared to home-cared children.
Conclusions:
- Infections are common upon starting large group child care.
- Early large GCC (before 2½) may offer protection against infections in later school years.
- Initial infections in GCC do not necessarily lead to a higher long-term infection burden.
Objective:
To determine whether the frequency of infections during the first 8 years of life varies according to age at initiation and type of group child care (GCC).
Design:
Eight-year (1998-2006) prospective cohort study.
Setting:
Families with a newborn living in Quebec in 1998.
Participants:
A representative sample of families (n = 1238) selected through birth registries.
Main Exposure:
Home care compared with small or large GCC during the early (ie, before 2½ years old) or late (3½-4½ years old) preschool period.
Main Outcome Measures:
Maternal reports of children's respiratory tract, ear, and gastrointestinal tract infections during the early preschool, late preschool, and early elementary school (5-8 years old) periods.
Results:
Compared with children cared for at home, those who started large GCC in the early preschool period had higher rates of respiratory tract infections (incidence rate ratio [IRR], 1.61; 95% confidence interval [CI], 1.27-2.03) and ear infections (IRR, 1.62; 95% CI, 1.19-2.20) during that period but lower rates of respiratory tract infections (IRR, 0.79; 95% CI, 0.66-0.96) and ear infections (IRR, 0.57; 95% CI, 0.37-0.88) during the elementary school years.
Conclusions:
Children contract infections around the time they initiate large structured group activities. Participation in large GCC before 2½ years old, although associated with increased infections at that time, seems to protect against infections during the elementary school years. Physicians may reassure parents that infections during the first child care years do not lead to a higher overall burden of infections.
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